Note*: This is applicable to both CentOS 5.4 and 5.5, maybe applicable to older versions as well. Introduction: One of the installation methods possible in installing CentOS 5.4 is network installation or NetInstall. There are good reasons why one would like to do NetInstall and not install from the full CDs. Installing from CD means you have to download monster files. In CentOS 5.4, NetInstall iso file is only 8.9MB whereas the CDs (6 sets) are ~700MB each. So if you are planning to install just once or if you are going to use VirtualBox (note snapshot functionality, branching and cloning), then netinstall would really make sense. Note that to have good installation experience you have to have a fast connection to internet or a mirror in your intranet. To start with, you need to have VirtualBox installed. I am using W7 Home Premium with 8GB as the host machine. This should not matter much actually if you are familiar with VirtualBox. Then download netinstall iso from http:/